Despite them trying to let third parties get a chance to release some titles without competing with their first party titles, they still need some kind of first party support at launch. The lack of a big third party support at launch with the 3DS hurt them, considering most of the games were lackluster, not to mention that third parties probably aren't used to the hardware yet to make something that stands out.
With the release of Skyward Sword next month, I don't see them doing a Zelda for the Wii U until a year or two after launch, unless they do a port of Skyward Sword for it. We won't see anything Smash Bros. related for a good while, and I'm not sure a Mario game will be ready at launch (within a year of launch, yes). I think Nintendo should prepare Pikmin 3 for the Wii U launch, since that's been a title that has been talked about for years now. What Nintendo should do is prepare some new IPs, mixed with one or two old ones for the Wii U launch.
